Solutions

ACROSS
1 Matins.
MA(TIN)S
5 Perverse.
PER+VERSE (rep rev.)
9 Bitterness.
(anag.)
10 Role.
(p)ROLE
11 Estrange.
E+STRANGE
12 Greats.
(anag.)
13 Swoop.
SW(O)OP (pows rev.)
15 Entertain.
ENTER+T(A)IN
18 Foretaste.
(anag.)
19 Cadet.
CADE+T
21 Pepper.
PE(PP)ER
23 Reassign.
RE(ASS)IGN
25 Rose.
(2 meanings)
26 Allegretto.
ALL+EGRET+T+O
27 Cemetery.
(straight cryptic)
28 Latent.
L(AT)ENT


DOWN
2 Aries.
(anag.)
3 Interpose.
(anag.)
4 Strand.
STRA(N)D (darts rev.)
5 Preternaturally.
P(RE+TERN+AT+UR)ALLY (RU rev.)
6 Resigned.
(anag.)
7 Eyrie.
(eerie hom.)
8 Solitaire.
(2 meanings)
14 Wholesome.
WHOLE+SOME
16 Transient.
TR(AN+SI)ENT (is rev.)
17 Carriage.
(2 meanings)
20 Mangel.
MANGE+L
22 Piece.
(2 meanings)
24 Get on.
(2 meanings)